package auction.model;import java.io.Serializable;/** * The address of a User. * * This entity class supports shared references, e.g. the * same instance can be referenced by a User (shippingAddress) * and by a Shipment (deliveryAddress). * * @see User * @see Shipment * @author Christian Bauer */public class AddressEntity implements Serializable {    private Long id = null;    private int version = 0;    private String street;    private String zipcode;    private String city;    private User user;    /**     * No-arg constructor for JavaBean tools     */    public AddressEntity() {}    /**     * Full constructor     */    public AddressEntity(String street, String zipcode, String city) {        this.street = street;        this.zipcode = zipcode;        this.city = city;    }    // ********************** Accessor Methods ********************** //    public Long getId() { return id; }    public void setId(Long id) { this.id = id; }    public int getVersion() { return version; }    public String getStreet() { return street; }    public void setStreet(String street) { this.street = street; }    public String getZipcode() { return zipcode; }    public void setZipcode(String zipcode) { this.zipcode = zipcode; }    public String getCity() { return city; }    public void setCity(String city) { this.city = city; }    public User getUser() { return user; }    public void setUser(User user) { this.user = user; }    // ********************** Common Methods ********************** //    public boolean equals(Object o) {        if (this == o) return true;        if (!(o instanceof AddressEntity)) return false;        final AddressEntity address = (AddressEntity) o;        if (!city.equals(address.city)) return false;        if (!street.equals(address.street)) return false;        return zipcode.equals(address.zipcode);    }    public int hashCode() {        int result;        result = street.hashCode();        result = 29 * result + zipcode.hashCode();        result = 29 * result + city.hashCode();        return result;    }    public String toString() {        return  "Street: '" + getStreet() + "', " +                "Zipcode: '" + getZipcode() + "', " +                "City: '" + getCity() + "'";    }    // ********************** Business Methods ********************** //}